I'm trying to write an action in a script to make a greenkey go much faster. I've found a technique which does a great job to remove the green spill.
Here's what I'm trying to do:
- Before the script can run; layer 1 (A) inside a comp must have the effect "keylight" onto it.
- Duplicate that layer (A)
- Pre-compose 2nd layer (B) and move all attributes to comp
- open pre-comp
- Add effect "Channel Combiner" to Layer (B)
- Change settings of "Channel Combiner": [From: Straight to Premultiplied | Solid Alpha: Checked]
- Duplicate Layer (B)
- Remove all effects from duplicated layer (C)
- Change blend mode of Layer (B) to "Color"
- Close Pre-comp
- Change Pre-comp trackmat to Alpha Matte
What I was also thinking was to add the keylight effect to one adjustment layer so that Layer A and Layer B takes the effect information from there. That way you can easily change the keylight effects afterwords. But I couldn't find out how to do that.
Some help would be much appreciated. I'm an instructor on Tuts+ and I will pitch this technique to the tutorials website. If it gets approved I'm willing to give half of my earnings ($125) to the person who wants to create this script with me.